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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $722,575,839 | 5,400,624 | 5,400,624 |
| 2006 | $871,764,115 | 6,575,196 | 6,575,196 |
| 2007 | $1,770,576,372 | 15,099,138 | 15,099,138 |
| 2008 | $2,796,530,595 | 22,147,526 | 22,147,526 |
| 2009 | $2,724,496,881 | 0 | 0 |
| 2010 | $2,565,090,066 | 22,309,600 | 22,309,600 |
Note: Quantity represents Weight in kilograms
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